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How can I change the filesize unit that is output by the tar command?

tar tvf test.tar.gz | awk '{print $5,$9}'

I would like for it to print the filesize in Gigabytes.

  • A gigabyte is 1000000000 bytes. Division of the file size in bytes by that number should give you the size in gigabytes. – Kusalananda Feb 11 at 21:40
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Very crudely, you could:

$ while read size filename; do echo "$filename: $(( size /1024 /1024 /1024))"; done < <(tar tvf test .tar.gz | awk '{print $4,$7}') test1.txt: 1 test2.txt: 5 test3.txt: 0 $

You may also like to add some decimal precision:

$ while read size filename; do echo "$filename: $(( (size * 100) /1024 /1024 /1024))"; done < <(tar tvf test.tar.gz | awk '{print $4,$7}') | sed 's/\([0-9][0-9]\)$/.\1/' test1.txt: 1.03 test2.txt: 5.93 test3.txt: 0.44 $

  • Why those cumbersome while loops? awk cand do all that work, and the work of sed as well. – Kusalananda Feb 11 at 21:55

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